# CVE-2023-38403: iperf3: Iperf is a tool which can measure maximum TCP bandwidth and tune various parameters and UDP characteristics

CVE-2023-38403 is fixed in 5 products on 1 platform, first by DSA-5455-1, released July 17, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-38403
- Priority: High
- CVSS: 7.5 (Important)
- EPSS: 0.0196
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 17, 2023

## Description

Iperf is a tool which can measure maximum TCP bandwidth and tune various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, and data-gram loss.  Security Fix(es):  * iperf3: memory allocation hazard and crash (CVE-2023-38403)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | iperf3 Debian 11.6 (bullseye) | 3.9-1+deb11u1 | [DSA-5455-1](https://patchblox.com/security/data/fix/linux/dsa-5455-1.md) | Jul 17, 2023 |
| Linux | iperf3 Debian 12.15 (bookworm) | 3.12-1+deb12u1 | [DSA-5455-1](https://patchblox.com/security/data/fix/linux/dsa-5455-1.md) | Jul 17, 2023 |
| Linux | iperf3 Debian 13.5 (trixie) | 3.14-1 | [DEBIAN-CVE-2023-38403](https://patchblox.com/security/data/fix/linux/debian-cve-2023-38403.md) | Jul 17, 2023 |
| Linux | iperf3 Debian 14 | 3.14-1 | [DEBIAN-CVE-2023-38403](https://patchblox.com/security/data/fix/linux/debian-cve-2023-38403.md) | Jul 17, 2023 |
| Linux | iperf3 RHEL 8 | 0:3.5-7.el8_8 | [RHSA-2023:4570](https://patchblox.com/security/data/fix/linux/rhsa-2023-4570.md) | Aug 8, 2023 |
| Linux | iperf3 RHEL 9 | 0:3.9-10.el9_2 | [RHSA-2023:4571](https://patchblox.com/security/data/fix/linux/rhsa-2023-4571.md) | Aug 8, 2023 |
| Linux | iperf3 Ubuntu 18.04.6 LTS (bionic) | 3.1.3-1ubuntu0.1~esm1 | [iperf3 3.1.3-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-iperf3-3.1.3-1ubuntu0.1-esm1.md) | Mar 18, 2024 |
| Linux | iperf3 Ubuntu 20.04 LTS (focal) | 3.7-3ubuntu0.1~esm1 | [iperf3 3.7-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-iperf3-3.7-3ubuntu0.1-esm1.md) | Mar 18, 2024 |
| Linux | iperf3 Ubuntu 22.04.1 LTS (jammy) | 3.9-1+deb11u1build0.22.04.1 | [iperf3 3.9-1+deb11u1build0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-iperf3-3.9-1-deb11u1build0.22.04.1.md) | Jul 17, 2023 |
| Linux | iperf3 almalinux 8 | 3.5-7.el8_8.alma | [ALSA-2023:4570](https://patchblox.com/security/data/fix/linux/alsa-2023-4570.md) | Aug 8, 2023 |
| Linux | iperf3 almalinux 9 | 3.9-10.el9_2.alma | [ALSA-2023:4571](https://patchblox.com/security/data/fix/linux/alsa-2023-4571.md) | Aug 8, 2023 |
| Linux | iperf3 amzn 2023 | 3.11-1.amzn2023.0.4 | [ALAS2023-2023-274](https://patchblox.com/security/data/fix/linux/alas2023-2023-274.md) | Aug 3, 2023 |
| Linux | iperf3 ol 8 | 0:3.5-7.el8_8 | [ELSA-2023-4570](https://patchblox.com/security/data/fix/linux/elsa-2023-4570.md) | Aug 11, 2023 |
| Linux | iperf3 ol 9 | 0:3.9-10.el9_2 | [ELSA-2023-4571](https://patchblox.com/security/data/fix/linux/elsa-2023-4571.md) | Aug 10, 2023 |
| Linux | iperf3 rocky 8 | 0:3.5-7.el8_8 | [RLSA-2023:4570](https://patchblox.com/security/data/fix/linux/rlsa-2023-4570.md) | Aug 24, 2023 |
| Linux | iperf3 rocky 9 | 0:3.9-10.el9_2 | [RLSA-2023:4571](https://patchblox.com/security/data/fix/linux/rlsa-2023-4571.md) | Aug 24, 2023 |
| Linux | iperf3-debuginfo amzn 2023 | 3.11-1.amzn2023.0.4 | [ALAS2023-2023-274](https://patchblox.com/security/data/fix/linux/alas2023-2023-274.md) | Aug 3, 2023 |
| Linux | iperf3-debugsource amzn 2023 | 3.11-1.amzn2023.0.4 | [ALAS2023-2023-274](https://patchblox.com/security/data/fix/linux/alas2023-2023-274.md) | Aug 3, 2023 |
| Linux | iperf3-devel amzn 2023 | 3.11-1.amzn2023.0.4 | [ALAS2023-2023-274](https://patchblox.com/security/data/fix/linux/alas2023-2023-274.md) | Aug 3, 2023 |
| Linux | libiperf0 Ubuntu 18.04.6 LTS (bionic) | 3.1.3-1ubuntu0.1~esm1 | [libiperf0 3.1.3-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libiperf0-3.1.3-1ubuntu0.1-esm1.md) | Mar 18, 2024 |
| Linux | libiperf0 Ubuntu 20.04 LTS (focal) | 3.7-3ubuntu0.1~esm1 | [libiperf0 3.7-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libiperf0-3.7-3ubuntu0.1-esm1.md) | Mar 18, 2024 |
| Linux | libiperf0 Ubuntu 22.04.1 LTS (jammy) | 3.9-1+deb11u1build0.22.04.1 | [libiperf0 3.9-1+deb11u1build0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libiperf0-3.9-1-deb11u1build0.22.04.1.md) | Jul 17, 2023 |

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